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==Muscles associated with the penis==
 
==Muscles associated with the penis==
 
'''Bulbospongiosus'''
 
'''Bulbospongiosus'''
*A single muscle that covers the root and ventral surface of the penis as well as the Bulbourethral glands (link to glands page)
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*A single muscle that covers the root and ventral surface of the penis as well as the bulbourethral glands (link to glands page)
*The function of this muscle is to empty the extrapelvic urethra of sperm in a similar way to the Urethralis muscle emptying the pelvic urethra.
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*The function of this muscle is to empty the extrapelvic urethra of sperm in a similar way to the urethralis muscle emptying the pelvic urethra.
    
'''Ischiocavernosus Muscles'''
 
'''Ischiocavernosus Muscles'''
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'''Retractor penis Muscles'''
 
'''Retractor penis Muscles'''
*Paired muscles oringinating on the caudal vertebrae and inserting on the ventrolateral surfaces of the penis.
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*Paired muscles originating on the caudal vertebrae and inserting on the ventrolateral surfaces of the penis.
 
*Maintains the sigmoid flexure of the fibroelastic penis when the muscles are contracted.
 
*Maintains the sigmoid flexure of the fibroelastic penis when the muscles are contracted.
 
*When the muscles are relaxed the penis protrudes through the prepuce as the sigmoid flexure unbends.
 
*When the muscles are relaxed the penis protrudes through the prepuce as the sigmoid flexure unbends.
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